Fused Ambipolar Aza-isoindigos with NIR absorption

2021 ◽  
Author(s):  
Liping Yao ◽  
Danlei Zhu ◽  
Hailiang Liao ◽  
Sheik Haseena ◽  
Mahesh kumar Ravva ◽  
...  
Keyword(s):  
Organic Semiconductors ◽  
High Performance ◽  
Low Cost ◽  
Light Weight ◽  
The Past ◽  
Pi Conjugated ◽  
Nir Absorption ◽  
Conjugated Organic Semiconductors

Due to their advantages of low-cost, light-weight, and mechanical flexibility, much attention has been focused on pi-conjugated organic semiconductors. In the past decade, although many materials with high performance has...

Redefining Light Weight Structural Design for Gas Marginal Field Development Through Conductor Supported Platform CSP Concept

2021 ◽  
Author(s):  
Shiiun Bak Wong ◽  
Nur Dalila Alias ◽  
Mohd Kamal Arif ◽  
Majid Shabazi
Keyword(s):  
Water Depth ◽  
Structural Design ◽  
Fast Track ◽  
Low Cost ◽  
Light Weight ◽  
Field Development ◽  
The Past ◽  
Structural Concept ◽  
The Common ◽  
Marginal Field

Abstract The rise of offshore marginal field development and low-cost CAPEX has given an impetus to O&G operators to challenge the common structural platform design especially for wellhead platform type. Demand to reduce the platform weight has been observed for the past 20 years. Typically, the challenge to meet this demand will be tremendous once the water depth exceed 50m. This paper will elaborate on how using an engineered design approach was implemented to obtain fast track onshore fabrication and offshore installation and meet the operator demand for minimal structural concept.

Fabrication of practical catalytic electrodes using insulating and eco-friendly substrates for overall water splitting

2020 ◽  
Vol 13 (1) ◽  
pp. 102-110 ◽  
Author(s):  
Weiju Hao ◽  
Renbing Wu ◽  
Hao Huang ◽  
Xin Ou ◽  
Lincai Wang ◽  
...  
Keyword(s):  
Water Splitting ◽  
High Performance ◽  
Low Cost ◽  
Light Weight ◽  
Overall Water Splitting ◽  
Insulating Substrates

A family of catalytic electrodes fabricated by insulating substrates of paper, cloth and sponge which bring dramatic advantages of high performance, low cost, light weight, eco-friendliness, flexibility, and simple fabrication, were developed.

scholarly journals Micellar Liquid Chromatography from Green Analysis Perspective

2015 ◽  
Vol 13 (1) ◽  
Author(s):  
Rania N. El-Shaheny ◽  
Mahmoud H. El-Maghrabey ◽  
Fathalla F. Belal
Keyword(s):  
Liquid Chromatography ◽  
High Performance ◽  
Low Cost ◽  
Pharmaceutical Formulations ◽  
Micellar Liquid Chromatography ◽  
High Reproducibility ◽  
The Past ◽  
Simultaneous Separation ◽  
Enhanced Luminescence

AbstractMicellar liquid chromatography (MLC) is a simple well-established branch of high-performance liquid chromatography. The applications of MLC for the determination of numerous compounds in pharmaceutical formulations, biological samples, food, and environmental samples have been growing very rapidly. MLC technique has several advantages over other techniques, such as simultaneous separation of charged and uncharged solutes, rapid gradient capability, direct on-column injection of physiological fluids, unique separation selectivity, high reproducibility, robustness, enhanced luminescence detection, low cost, and safety. This review is devoted to the evaluation of the agreement of MLC with the principles of green chemistry which recently represents a universal trend. Also, it provides an overview on the basics of MLC, in addition to a survey of MLC methods published in the past five years for the assay of various compounds in different matrices.

TEM studies of the ternary Ti36 Al62 Nb2 alloy

2011 ◽  
Vol 1295 ◽  
Author(s):  
V.S.K. Chakravadhanula ◽  
K. Kelm ◽  
L. Kienle ◽  
V. Duppel ◽  
A. Lotnyk ◽  
...  
Keyword(s):  
High Performance ◽  
Elevated Temperatures ◽  
Treatment Phase ◽  
Al Alloys ◽  
Ternary Alloys ◽  
Light Weight ◽  
Combined Approach ◽  
Orientation Relationships ◽  
The Past ◽  
Transmission Electron

ABSTRACTAl-rich Ti-Al alloys attracted some attention during the past years due to the possibility of their application as light-weight, high-performance materials at elevated temperatures. The effect of the addition of Nb to Al-rich Ti-Al alloys has been studied for Ti36 Al62 Nb2 by a combined approach of transmission electron microscopy (TEM) techniques for unraveling the structure and composition at the nanoscale. Structural analyses on as-cast ternary alloys revealed the presence of h-TiAl2-, Ti3Al5- and γ-TiAl-type phases. After heat treatment, phase transformations like the replacement of the metastable h-TiAl2-type by the stable r-TiAl2-type were identified. Additionally, changes of the microstructural features like the formation of interfaces with different orientation relationships are apparent. The orientation and interfacial relationships involved are compared to those of binary Ti-Al alloys rich in Al.

scholarly journals Carbonized wood with ordered channels decorated by NiCo2O4 for lightweight and high-performance microwave absorber

2021 ◽  
Vol 11 (1) ◽  
pp. 105-119
Author(s):  
Guangyu Qin ◽  
Xiaoxiao Huang ◽  
Xu Yan ◽  
Yunfei He ◽  
Yuhao Liu ◽  
...  
Keyword(s):  
High Performance ◽  
Low Cost ◽  
Interfacial Polarization ◽  
Growth Direction ◽  
Channel Structure ◽  
Light Weight ◽  
Multiple Reflections ◽  
Element Analysis ◽  
Environmental Friendliness ◽  
Carbonized Wood

AbstractWood-derived carbon has a 3D porous framework composed of through channels along the growth direction, which is a suitable matrix for preparing electromagnetic wave (EMW) absorbing materials with low cost, light weight, and environmental friendliness. Herein, the carbonized wood decorated by short cone-like NiCo2O4 (NiCo2O4@CW) with highly ordered straight-channel architecture was successfully manufactured through a facile calcination procedure. The horizontal arrangement of the through channels of NiCo2O4@CW (H-NiCo2O4@CW) exhibits a strong reflection loss value of -64.0 dB at 10.72 GHz with a thickness of 3.62 mm and a low filling ratio of 26 wt% (with the density of 0.98 g·cm-3), and the effective absorption bandwidth (EAB) is 8.08 GHz (9.92–18.0 GHz) at the thickness of 3.2 mm. The excellent microwave absorption (MA) property was ascribed to the ordered-channel structure with abundant interfaces and defects from NiCo2O4@CW, which could promote the interfacial polarization and dipole polarization. What is more, this advantageous structure increased the multiple reflections and scattering. Finite element analysis (FEA) simulation is carried out to detect the interaction between the prepared material and EMW when the ordered channels are arranged in different directions. This research provides a low-cost, sustainable, and environmentally friendly strategy for using carbonized wood to fabricate microwave absorbers with strong attenuation capabilities and light weight.

Phototransistors Based on A Lightly Doped P3HT

MRS Advances ◽  
2020 ◽  
Vol 5 (37-38) ◽  
pp. 1975-1982
Author(s):  
Thomas H. Debesay ◽  
Sam-Shajing Sun
Keyword(s):  
High Performance ◽  
Low Cost ◽  
Acid Methyl Ester ◽  
Extensive Study ◽  
The Past ◽  
Polymeric Semiconductor ◽  
Donor Acceptor ◽  
Low Toxicity ◽  
Improved Performance ◽  
P Type

AbstractOrganic/Polymeric Semiconductor (OSC) based devices have been under extensive study for the past three decades due to their intrinsic potential advantages such as lightweight, mechanical flexibility, biocompatibility, low toxicity, abundant material availability, low cost of processing, etc. A phototransistor incorporates the properties and functions of a transistor and photodetector. In this study, a phototransistor based on a donor/acceptor (D/A) pair (photo-doping) was studied and demonstrated. Unlike in organic photovoltaics (OPV) where 1:1 proportion by mass of the donor:acceptor is utilized to make up the active layer, that ratio appears to be too high for phototransistor applications. According to literature, this 1:1 concentration leads to low overall device performance, lack of I-V curve saturation (kink effect), and bipolar behavior. By altering fabrication techniques and doping concentrations, we were able to demonstrate a donor/acceptor based phototransistor with p-type characteristics with improved performance. In this work, we fabricated a high-performance OFET based on a very small amount of Phenyl-C71-butyric acid methyl ester (PCBM) doped into a Poly(3-hexylthiophene) (P3HT) host. With this work, a greater understanding behind the optimization of D/A based phototransistors is advanced.

scholarly journals Carbon Nanotube-Based Organic Thermoelectric Materials for Energy Harvesting

Polymers ◽  
2018 ◽  
Vol 10 (11) ◽  
pp. 1196 ◽  
Author(s):  
Xiaodong Wang ◽  
Hong Wang ◽  
Bing Liu
Keyword(s):  
High Performance ◽  
Organic Materials ◽  
Low Cost ◽  
The Past ◽  
Current Trends ◽  
P Type ◽  
Flexible Thermoelectric ◽  
Representative Samples ◽  
Theory And Experiments ◽  
Remarkable Progress

Carbon nanotubes (CNTs) have attracted much attention in developing high-performance, low-cost, flexible thermoelectric (TE) materials because of their great electrical and mechanical properties. Theory predicts that one-dimensional semiconductors have natural advantages in TE fields. During the past few decades, remarkable progress has been achieved in both theory and experiments. What is more important is that CNTs have shown desirable features for either n-type or p-type TE properties through specific strategies. Up to now, CNT‒polymer hybrids have held the record for TE performance in organic materials, which means they can potentially be used in high-performance TE applications and flexible electronic devices. In this review, we intend to focus on the intrinsic TE properties of both n-type and p-type CNTs and effective TE enhanced strategies. Furthermore, the current trends for developing CNT-based and CNT‒polymer-based high TE performance organic materials are discussed, followed by an overview of the relevant electronic structure‒TE property relationship. Finally, models for evaluating the TE properties are provided and a few representative samples of CNT‒polymer composites with high TE performance are highlighted.

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